Across the nation's major demographic, political, and religious groups, support for the proposed law ranges from as high as 77% among self-described liberal Americans, and 76% among those with no religious affiliation, to as low as 23% among weekly churchgoers, and 30% among Republicans and conservatives.

Other groups showing at least 60% support for legalizing same-sex marriage nationwide include Democrats, adults aged 18 to 34, those who rarely or never attend a church or other place of worship, moderates, Easterners, and Catholics. Others showing less than 50% support include Protestants, adults 55 and older, Southerners, and men.

The groups showing the most ambiguity about such a same-sex marriage law, with between 51% and 53% in favor and 43% to 45% opposed, include Midwesterners, nonwhites, and adults aged 35 to 54.